Question

如何正确创建Gtk.FileChooseDialog？

import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk

dialog = Gtk.FileChooserDialog("Please choose a folder", None,
    Gtk.FileChooserAction.SELECT_FOLDER,
    (Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
     "Select", Gtk.ResponseType.OK))

但是，如果你用python -W error运行它（以捕获已弃用的警告），它会说：

  File "test3.py", line 8, in <module>
    "Select", Gtk.ResponseType.OK))
  File "/usr/lib/python2.7/dist-packages/gi/overrides/__init__.py", line 287, in new_init
    category, stacklevel=stacklevel)
gi.overrides.Gtk.PyGTKDeprecationWarning: Using positional arguments with the GObject constructor has been deprecated. Please specify keyword(s) for "title, parent, action, buttons" or use a class specific constructor. See: https://wiki.gnome.org/PyGObject/InitializerDeprecations

使用Gtk.FileChooserDialog.new可获得TypeError: Dialog constructor cannot be used to create instances of a subclass FileChooserDialog。

The API对构造函数一无所知。怪异。

ps：这个问题的答案应该适用于python -W error。它不应该依赖于已弃用的API。这是我的要点。

Answer 1

只需按照说明操作并使用关键字参数即可。我还将按钮更改为使用.add_buttons()，因为它还抛出了DeprecationWarning：

import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk

dialog = Gtk.FileChooserDialog(
    title="Please choose a folder",
    action=Gtk.FileChooserAction.SELECT_FOLDER,
)

dialog.add_buttons(Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
                   "Select", Gtk.ResponseType.OK)

Python GTK3：如何创建Gtk.FileChooseDialog？

1 个答案: